Evaluating the link between blue-green luminescence and cross-relaxation processes in Tb3+-doped glasses

Bionic Micro‐Texture Duplication and RE3+ Space‐Selective Doping of Unclonable Silica Nanocomposites for Multilevel Encryption and Intelligent Authentication

“…The transition of Tb 3+ in silica glass from blue to green fluorescence is mainly attributed to the cross‐relaxation (CR) phenomenon ( 5 D 3 + 7 F 0 → 5 D 4 + 7 F 6 ). [ 68 ] The diverse color variations of MTPLs ensure the security of anti‐counterfeiting labels. Furthermore, XRD curves and Raman spectra are obtained to demonstrate the amorphous state and densification of multi‐RE 3+ doped MTPLs after sintering at 1200 °C.…”

Effect of ZnO on Luminescence Performance of Terbium-Activated Zinc Borosilicate Glasses

“…UV-vis room temperature absorption spectra for Tb 3+ -doped zinc borosilicate glass samples are given in Figure S2 [46][47][48][49]. Phosphorescence properties of 0.35 mol% of Tb 2 O 3 -doped glasses were measured after samples were irradiated by a 363 nm wavelength UV light source for 5 min, as given in Figure 8.…”

“…Phosphorescence properties of 0.35 mol% of Tb 2 O 3 -doped glasses were measured after samples were irradiated by a 363 nm wavelength UV light source for 5 min, as given in Figure 8. According to phosphorescence spectrophotometer results, four distinct emission peaks existed at 487 nm, 542 nm, 585 nm, and 620 nm, which arose from the 5 D 4 → 7 F 6 , 5 D 4 → 7 F 5 , 5 D 4 → 7 F 4 , and 5 D 4 → 7 F 3 transitions of Tb 3+ ions, respectively [15,46,50]. Emission spectra can be described from a schematic energy level diagram of Tb 3+ ions, as illustrated in Figure 9.…”

Green- and Blue-Emitting Tb3+-Activated Linde Type A Zeolite-Derived Boro-Aluminosilicate Glass for Deep UV Detection/Imaging

“…Additionally, Tb 3+ is an important dopant in commercial phosphor LaPO 4 :Ce 3+ , Tb 3+ [12,13]. Nevertheless, in practice, the emission spectra of Tb 3+ -doped materials are often dominated by a characteristic green light (543 nm; 5 D 4 to 7 F 5 transition) due to a non-radiative relaxation from the 5 D 3 level to the 5 D 4 level via crossrelaxation to a neighbor Tb 3+ [11,[14][15][16]. In fact, examples of Tb 3+ -doped glasses showing 5 D 3 -originated blue emission with intensities comparable to those of the green emission are limited to glasses with low contents of Tb 3+ (typically no more than 1 mol%) [14,15,[17][18][19].…”

“…Nevertheless, in practice, the emission spectra of Tb 3+ -doped materials are often dominated by a characteristic green light (543 nm; 5 D 4 to 7 F 5 transition) due to a non-radiative relaxation from the 5 D 3 level to the 5 D 4 level via crossrelaxation to a neighbor Tb 3+ [11,[14][15][16]. In fact, examples of Tb 3+ -doped glasses showing 5 D 3 -originated blue emission with intensities comparable to those of the green emission are limited to glasses with low contents of Tb 3+ (typically no more than 1 mol%) [14,15,[17][18][19]. The green luminescence decay time of Tb 3+ -doped glasses is typically on the order of ms [16,[20][21][22][23][24][25][26], which normally does not satisfy the fast response time required for some applications, e.g., scintillation detectors [27] and plasma display panels [28,29].…”